5249987 has 2 divisors, whose sum is σ = 5249988. Its totient is φ = 5249986.

The previous prime is 5249983. The next prime is 5249989. The reversal of 5249987 is 7899425.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5249987 - 2² = 5249983 is a prime.

Together with 5249989, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5249983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2624993 + 2624994.

It is an arithmetic number, because the mean of its divisors is an integer number (2624994).

Almost surely, 2^5249987 is an apocalyptic number.

5249987 is a deficient number, since it is larger than the sum of its proper divisors (1).

5249987 is an equidigital number, since it uses as much as digits as its factorization.

5249987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 44.

The square root of 5249987 is about 2291.2850106436. The cubic root of 5249987 is about 173.8011887891.

The spelling of 5249987 in words is "five million, two hundred forty-nine thousand, nine hundred eighty-seven".